I'm learning win32, proberly way to early! I can't even make a consol program. Well i can, but not werry well

but, well....
I'm run in to a problem!
I don't know when to use WNDCLASSEX and when to use WNDCLASS???

some tutorials use WNDCLASSEX and some WNDCLASS...

I know I't something whit childe window's, right???

Please help me

...and please explain in simpel terms, I'm NOT verry good at english -please

in front -Thans for your help!

-GoldenGuruN